Denver Mint correspondence scanned at the National Archives (NARA) in Denver - covering the period 1905-1913. NARA identifier is record group 104, 8KRA-104-84-052 + 8KRA-104-84-046. Box 1, Folder 3. Folder 3 title: “… RG 104 Mint.” Courtesy of John Graffeo.
While some of the folders in this respective sequence may be numbered and others may not be - new numbers were assigned to each folder based on the archival theory of original order - which is strongly respected and maintained by NARA. These new numbers are represented in the metadata, and again - they represent the order in which the folders were found in the archival boxes to which they belong.